package com.cloudptt.api.product.log;

import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;

import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.media.AudioManager;
import android.os.Build;
import android.os.Environment;
import android.os.Looper;
import android.widget.Toast;

import com.cloudptt.api.comm.Common;
import com.cloudptt.api.pjsip.utils.Compatibility;
import com.cloudptt.api.product.Product;
import com.cloudptt.api.product.res.Resource;

public class CrashHandler implements UncaughtExceptionHandler {
	public static final String TAG = "CrashHandler";

	// 系统默认的UncaughtException处理类
	private Thread.UncaughtExceptionHandler mDefaultHandler;
	// CrashHandler实例
	private static CrashHandler INSTANCE = new CrashHandler();
	// 程序的Context对象
	private Context mContext;
	// 用来存储设备信息和异常信息
	private Map<String, String> infos = new HashMap<String, String>();

	/** 保证只有一个CrashHandler实例 */
	private CrashHandler() {
	}

	/** 获取CrashHandler实例 ,单例模式 */
	public static CrashHandler getInstance() {
		return INSTANCE;
	}

	/**
	 * 初始化
	 * 
	 * @param context
	 */
	public void init(Context context) {
		mContext = context;
		// 获取系统默认的UncaughtException处理器
		mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
		// 设置该CrashHandler为程序的默认处理器
		Thread.setDefaultUncaughtExceptionHandler(this);
//		nameString = BmobUserManager.getInstance(mContext).getCurrentUserName();
	}

	/**
	 * 当UncaughtException发生时会转入该函数来处理
	 */
	@Override
	public void uncaughtException(Thread thread, Throwable ex) {
		if (!handleException(ex) && mDefaultHandler != null) {
			// 如果用户没有处理则让系统默认的异常处理器来处理
			mDefaultHandler.uncaughtException(thread, ex);
		} else {
			try {
				Thread.sleep(3000);
			} catch (InterruptedException e) {
				Log.e(TAG, "error : ", e);
			}
			// 退出程序
			android.os.Process.killProcess(android.os.Process.myPid());
			System.exit(1);
		}
	}

	/**
	 * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
	 * 
	 * @param ex
	 * @return true:如果处理了该异常信息;否则返回false.
	 */
	private boolean handleException(Throwable ex) {
		if (ex == null) {
			return false;
		}
//		WonderMapApplication.getInstance().getSpUtil().setCrashLog(true);// 每次进入应用检查，是否有log，有则上传
		// 使用Toast来显示异常信息
		new Thread() {
			@Override
			public void run() {
				Looper.prepare();
				String str = Resource.getString("crash_alert");
				Toast.makeText(mContext, str, Toast.LENGTH_LONG)
						.show();
				Looper.loop();
			}
		}.start();
		// 收集设备参数信息
		collectDeviceInfo(mContext);
		// 保存日志文件
		saveCrashInfo2File(ex);
		actualUnsetAudioInCall();
		return true;
	}

	/**
	 * 收集设备参数信息
	 * 
	 * @param ctx
	 */
	public void collectDeviceInfo(Context ctx) {
		try {
			PackageManager pm = ctx.getPackageManager();
			PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(),
					PackageManager.GET_ACTIVITIES);
			if (pi != null) {
				String versionName = pi.versionName == null ? "null"
						: pi.versionName;
				String versionCode = pi.versionCode + "";
				infos.put("versionName", versionName);
				infos.put("versionCode", versionCode);
			}
		} catch (NameNotFoundException e) {
			Log.e(TAG, "an error occured when collect package info", e);
		}
		Field[] fields = Build.class.getDeclaredFields();
		for (Field field : fields) {
			try {
				field.setAccessible(true);
				infos.put(field.getName(), field.get(null).toString());
				Log.d(TAG, field.getName() + " : " + field.get(null));
			} catch (Exception e) {
				Log.e(TAG, "an error occured when collect crash info", e);
			}
		}
	}

	/**
	 * 保存错误信息到文件中
	 * 
	 * @param ex
	 * @return 返回文件名称,便于将文件传送到服务器
	 */
	private String saveCrashInfo2File(Throwable ex) {

		StringBuffer sb = new StringBuffer();
		for (Map.Entry<String, String> entry : infos.entrySet()) {
			String key = entry.getKey();
			String value = entry.getValue();
			sb.append(key + "=" + value + "\n");
		}

		Writer writer = new StringWriter();
		PrintWriter printWriter = new PrintWriter(writer);
		ex.printStackTrace(printWriter);
		Throwable cause = ex.getCause();
		while (cause != null) {
			cause.printStackTrace(printWriter);
			cause = cause.getCause();
		}
		printWriter.close();
		String result = writer.toString();
		Log.d(" crash log", result);
		sb.append(result);
		
		if(!Product.mPermissonGrant){
			return null;
		}
		try {
			long timestamp = System.currentTimeMillis();
			String time = Common.getDateAndTime();
			String fileName = time + "-" + timestamp
					+ ".txt";
			if (Environment.getExternalStorageState().equals(
					Environment.MEDIA_MOUNTED)) {
				String path = Environment.getExternalStorageDirectory()
				+ File.separator + "CloudPTT" + File.separator +"logs"+File.separator;
				
				File dir = new File(path);
				if (!dir.exists()) {
					dir.mkdirs();
				}
				File[] fa=dir.listFiles();
				if(fa.length==50)
				{
					Arrays.sort(fa, new Comparator<File>() {
						public int compare(File f1, File f2) {
							long diff = f1.lastModified() - f2.lastModified();
							if (diff > 0)
								return 1;
							else if (diff == 0)
								return 0;
							else
								return -1;
						}
						public boolean equals(Object obj) {
							return true;
						}
					});
					fa[0].delete();
				}				
				FileOutputStream fos = new FileOutputStream(path + fileName);
				Log.e("crash log",path + fileName);
				fos.write(sb.toString().getBytes());
				fos.close();
			}
			return fileName;
		} catch (Exception e) {
			Log.e(TAG, "an error occured while writing file...", e);
		}
		return null;
	}
	
//	public static String getDefaultFilePath() {
//	    String filepath = "";
//	    File file = new File(Environment.getExternalStorageDirectory(),
//	            "abc.txt");
//	    if (file.exists()) {
//	        filepath = file.getAbsolutePath();
//	    } else {
//	        filepath = "不适用";
//	    }
//	    return filepath;
//	}

	public void actualUnsetAudioInCall()
	{
		AudioManager audioManager = (AudioManager)mContext.getSystemService(Context.AUDIO_SERVICE);
				
		int inCallStream = Compatibility.getInCallStream(false);
		audioManager.setStreamSolo(inCallStream, false);
		inCallStream = Compatibility.getInCallStream(true);
		audioManager.setStreamSolo(inCallStream, false);
		
		audioManager.setMode(AudioManager.MODE_NORMAL);
	}
	
}